| | Miśkiewicz, Benon. | Rozwój stałych punktów oporu w Polsce do... | 1964 | | 3 bibl. |
| | Calderón Quijano, José An... | Historia de las fortificaciones en Nueva... | 1953 | | 1 bibl. |
| | Bornfalk Back, Anders, 19... | Från stenkrigare till borgjarl : befästn... | 2023 | | 7 bibl. |
| | Allison, Penelope M., 195... | People and spaces in Roman military base... | 2013 | | 1 bibl. |
| | Zepeda y Adrada, Alonso | Epitome de la fortificacion moderna, : A... | 1669 | | 1 bibl. |
| | Saunders, Andrew | Fortress Britain : artillery fortificati... | 1989 | | 2 bibl. |
| | Lepage, Jean-Denis G. G.,... | Dictionary of fortifications : an illust... | 2022[2022] | | 1 bibl. |
| | Biller, Thomas | Die mittelalterliche Stadtbefestigung im... | 2016[2016] | | 1 bibl.
Se även
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| | | Old Oswestry Hillfort and its landscape ... | 2020 | | 1 bibl. |
| | | A basic research on mountain fortress in... | 2007 | | 3 bibl. |